Part A
AD9764ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5181 PCS
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9764ARZ and AD9762ARURL are both 12-bit current-output DACs from Analog Devices in a 28-lead SOIC package, sharing the same resolution, supply range, and temperature grade. The AD9762ARURL offers a higher update rate and lower power consumption, making it a viable functional substitute for the AD9764ARZ in most designs, provided the board layout and output configuration are validated against the target application.
Resolution
High match
Package Type
High match
Output Type
High match
Update Rate
Validation required
Parts at a glance
Part B
AD9762ARURL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4791 PCS
- Package
- TSSOP-28
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9764ARZ | AD9762ARURL | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 12 bit | Resolution determines the number of discrete output levels; a 14-bit DAC provides 4x finer quantization than a 12-bit DAC, directly affecting signal fidelity and SFDR. |
| Number of D/A Converters | 1 | 1 | Both are single-channel DACs, so channel count is compatible for direct substitution in single-path signal chains. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Current-output DACs require an external I/V stage; matching output topology ensures the surrounding analog circuitry remains compatible. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Compatible supply ranges allow the parts to operate from the same rails without redesigning the power section. |
| Package / Case | 28-SOIC | 28-SOIC | Identical package and pinout enable drop-in board replacement without layout changes. |
| Mounting Type | Surface Mount | Surface Mount | Matching mounting style ensures compatibility with the same PCB assembly process. |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Equivalent temperature ratings confirm both parts suit the same environmental conditions. |
| Data Interface | Parallel | Parallel | A parallel input interface means the digital host timing and bus width remain compatible across both parts. |
| Settling Time | 35 ns | 35 ns | Settling time governs maximum update rate and dynamic performance; matching values preserve timing margins in the application. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9764ARZ | AD9762ARURL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Obsolete |
| Base Product Number | AD9764 | - |
| Number of Bits | 14 | - |
| Number of D / A Converters | 1 | - |
| Settling Time | 35ns (Typ) | - |
| Output Type | Current - Unbuffered | - |
| Differential Output | Yes | - |
| Data Interface | Parallel | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | - |
| INL / DNL (LSB) | ±2.5, ±1.5 | - |
| Architecture | Current Source | - |
| Operating Temperature | -40°C ~ 85°C | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
Frequently asked questions
What are the key differences between the AD9764ARZ and AD9762ARURL?
The AD9764ARZ is a 14-bit, 125 MSPS TxDAC digital-to-analog converter in a 28-lead SOIC package, while the AD9762ARURL is a 12-bit, 125 MSPS TxDAC DAC in a 28-lead TSSOP package supplied in tape-and-reel form. The primary differences are resolution (14-bit vs 12-bit) and package type (SOIC vs TSSOP).
Do the AD9764ARZ and AD9762ARURL have the same update rate?
Yes. Both devices are specified for a maximum update rate of 125 MSPS, making them pin-compatible in terms of speed grade within the TxDAC family.
Are the AD9764ARZ and AD9762ARURL pin-compatible?
Both are 28-lead devices with the same TxDAC pinout function assignment, but they differ in package type: the AD9764ARZ uses a 28-lead SOIC and the AD9762ARURL uses a 28-lead TSSOP. PCB land patterns are therefore not interchangeable without layout changes.
What is the resolution difference and how does it affect performance?
The AD9764ARZ provides 14-bit resolution, offering 16,384 output levels, while the AD9762ARURL provides 12-bit resolution, offering 4,096 output levels. The higher resolution of the AD9764ARZ yields lower quantization noise and better dynamic range for demanding signal synthesis applications.
What is the difference in packaging and delivery format?
The AD9764ARZ is supplied in a 28-lead SOIC tube/rail format, whereas the AD9762ARURL is supplied in a 28-lead TSSOP in tape-and-reel format (the "RL" suffix denotes reel packaging), which is suited to high-volume automated assembly.
Can the AD9762ARURL be used as a drop-in replacement for the AD9764ARZ?
No. Although both are 125 MSPS TxDAC devices, the AD9762ARURL is 12-bit versus 14-bit for the AD9764ARZ, and the package differs (TSSOP vs SOIC). A direct drop-in replacement is not possible without verifying resolution requirements and redesigning the PCB footprint.
Do both devices share the same supply voltage and output configuration?
Yes. Both the AD9764ARZ and AD9762ARURL operate from a single 2.7 V to 5.5 V supply and provide complementary current outputs, consistent with the Analog Devices TxDAC family architecture.